KOKA, JAPAN - FEBRUARY 20 : Koka city tourism division staffs wearing ninja costumes work at the Koka City Hall on February 20, 2017 in Koka, Shiga Prefecture, Japan. Koka city, known as the 'Koga' Ninja clan hometown, promotes the Ninja-day, which is February 22. (Photo by Richard Atrero de Guzman/NUR Photo)